Lock



J. M. McKEE.

LOCK.

, v APPLICA-non man oc.e.192o. l 1,382,924. Patented June 28, 1921.

2 SHEETS--SHEET 2.

UNITED STATES PATENT OFFICE.

LOCK.

Specification of Letters Patent.

Patented J une 28, 1921.

Application led October 6, 1920. Serial No. 414,978.

fo all whom t may concern.'

Be it known that I, JAMES l/I. McKee, citizen of the United States,residing at New Bloomfield, in the county of Perry and State oit'Pennsylvania, have invented certain new and useful Improvements inLocks, of which the following is a specification.

My invention relates to locks, and one ot the objects of the inventionis to provide a lock which cannot be easily picked and which can not beunlocked by a master key.

Another object of the invention is to so design the operative parts ofthe lock, that by variation inthe location or size of these parts, awide number of different combinations may be effected in which no twokeys will be alike or operate the same lock.

Another object of the invention is in the application of this lock tosafeguard automobiles against theft, by Ylocking the steering wheel,spark and gas levers against unauthorized movement; also for lockingtires, robes and other articles in the automobile.

Another application of my invention is tor locking the steering postagainst turning, thus preventing theft of a machine by towing.

Vith these general objects in view, my invention consists in certainnovel and peculiar features of construction and combination of parts ashereinafter described and claimed, and in order that it may be fullyunderstood, reference is to be had to the ac companying drawing inwhich- Figure l is a perspective view oi the lock as constructed forlocking the steering wheel spark and gas llevers against movement or forlocking articles in the machine, such as robes;

Fig. 2 is a plan view of the same with the cover open and showing theoperating parts of the inner lock;

Fig. 3 is a longitudinal section on the line 8--3 of Fig. 2;

Fig. l is a transverse section on the line ll-4f of Fig. 3;

Fig. 5 is an enlarged transverse section of the line 5--5 of Fig. 3;

Fig. 6 is an enlarged transverse section ony the line 6 6 of Fig. 3.

Fig. 7 is adetail view of the sliding bolt of the inner lock;

Fig. 8 is a detail view of the key for the lock; y

Figs. 9 and 10 arevdetail views of a modification. of the locking chain,

different adjusted positions and to be held against movement in onedirection by the said catches. Connected to the endl ot the ratchet barsand to the bottom ot the casing to provide a loop, are the chains l0.

The locking member fl is provided with a reciprocating U shaped pin llwhich is normally forced forward by the leaf spring l2.

The end 13 of the pin il when in forward y position, engages an aperturela in the bolt 5, while the other end l5 projects a short distance intothe keyhole 16. For resiliently holding the sliding bolt 5 in lockedposition, a spring 17 is provided. .The under side of the sliding bolt 5is provided with rack teeth 1S which engage with the pinion shaped bodyi9 of the key 20. The said key is provided with an arbor 2l which litsthe bearing in the bottom of the keyhole 23. 0n the end of the pinion 19is a pin '24- which when the key is inserted in the keyhole alines withand abuts the projecting end 15 of the piu ll. As the key is pressedforward the nin li is forced rearwardly against the pressure of thespring l2 and the end lof the said pin is withdrawn from thc aperturela. its the key is turned, the cooperation of the rack 1S with thepinion li9 will reciprocate the locking bolt 5. In order that the keyshall not move forward when inserted, so far Aas to cause the pin 2i toenter the aperture in which the end l5 of the pin il slides, e limitingstop 25 is provided in the bottom of the keyhole. For causing the key toenterI the slot in a predetermined position, I provide a spline 26 inthekeyhole. and cooperating with a groove 27 in the key. To preventrotation of the bolt 5, the said bolt is provided with a slot 28 withwhich thc slightly projecting end 13 of the locking pin cooperates whenin retracted position.

The operation of my invention is as follows: The cover 2 of thereceptacle is in locked position. If it is desired to lock the spark andgas levers of an automobile7 the chain is looped around them in such amanner as to prevent movement thereof, and the rack bars 9 are theninserted in the slot 7 and pushed forward until the loops of the chainare taut. The cooperation ot the spring 8 and the rack bars preventwithdrawal of the latter. IVhen it is desired to unlock the device, thekey is inserted in the keyhole properly by the cooperation of the spline26 and groove 27. As the key is.

' or to makea master key therefor on account of the several factorswhich must co- Instead of using the chain as shown in Fig. l a blockchain as shown in Figs.-9

and 10 may be used. The advantages of this type of the chain is that asmaller loop can be made as the chain itself can be drawn through thegrooves 7 and locked in position.

From theabove description it will be apn parent that in the applicationof my invention as illustrated, the device as shown is essentially alock within a lock. It is intended however that the inner locking membershall be of general application. One of the other uses to which it maybe put is in connection with locking the steering gear of an automobile.In that case the body of the lock would be placed on the steering casingand the bolt would enter the aperture in the steering post, thuspreventing relative rotation ot these two parts. Y

From the above description it will be apparent that I have produced a.device of the character described, which possesses all the featuresenumerated as desirable, and Vwhile I have illustrated and described thepreferred -orm of the invention, it will be understoodv that I .reservethe right to all changes properly falling within the spirit and scope ofthe appended claims.

Therefore what I claim as new and Adesire to secure by Letters Patent ofthe United States is:

l. A lock comprising a bolt and a pluralarmed locking pin, one arm ofthe said pin cooperating with the said bolt to lock it against movement,a key adapted to cooperate with the other arm to release the first namedarm from engagement with the bolt and cooperating means on the key andbolt for moving the latter when the key is turned.

2. A chain lock comprising a casing member, a cover member hingedthereto, oneV of the said members being slotted, flexible securing meansattached. at one end to one of the said members and at the other endprovided with means for engaging the slotted member, and means orlockingthe cover Y member to the casing member to lock the flexible securingmeans in position.

8. A lock comprising a bolt and a U shaped locking pin, one arm ofV thesaid pin engaging with the bolt to lock it against movement, a keyadapted to cooperate with the .other armto release the first Vnamed armfrom engagement with the bolt and co? operating means on the key andbolt for moving the latter when the key is turned.

4. A lock comprising a bolt and a U shaped ylocking pin, one arm of thesaid pin engaging with the bolt to lock it against movement, the otherarm projecting into the keyhole and oit center thereof,` a key adaptedto cooperate with thelast'named arm to release the first named arm fromengagement with the bolt and cooperating means on the key and bolt formoving the latter when the key is turned.

5. A lock comprising a bolt and a AU shaped locking pin, one arm of thesaid pin engaging with the bolt to lock it 'against movement, the otherarm projecting into the keyhole, a key adapted to cooperate with thelast named arm to release the tirstrnamed arm from engagement with thebolt as the key isinserted in the lock, and ratchetteeth on the boltcooperating with pinion teeth on the key for turning the said bolt.

6. A lock comprising a zbolt and a U shaped locking pin, one armor thesaid pin engaging with the bolt to lock it against movement, the otherarm projecting into the keyhole, a key adaptedV to cooperate with thelast named arm to release the first named arm from engagement with theboltV as the key is inserted in the lock, and ratchet teeth on the bolt'cooperating with pinion teeth on the key -for turning the saidbolt,anda pin in the keyhole slot engaging others of the pinion teeth forpositioning the key as it is inserted in the lock. v

In testimony whereof I. affix my signature.

JAMES M. McKEE.

